package com.cxk.hr.util;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.Reader;
import java.net.URL;
import java.nio.charset.Charset;

import org.json.JSONException;
import org.json.JSONObject;

/**
 * 通过当前ip获取地址方法(根据url获取json对象)
 * 
 * @author 84157
 */
public class GetPlaceByIp {

	private static String readAll(Reader rd) throws IOException {
		StringBuilder sb = new StringBuilder();
		int cp;
		while ((cp = rd.read()) != -1) {
			sb.append((char) cp);
		}
		return sb.toString();
	}

	public static JSONObject readJsonFromUrl(String url) throws IOException, JSONException {
		InputStream is = new URL(url).openStream();
		try {
			BufferedReader rd = new BufferedReader(new InputStreamReader(is, Charset.forName("UTF-8")));
			String jsonText = readAll(rd);
			JSONObject json = new JSONObject(jsonText);
			return json;
		} finally {
			is.close();
			// System.out.println("同时 从这里也能看出 即便return了，仍然会执行finally的！");
		}
	}

	public static void main(String[] args) throws IOException, JSONException {
		// 这里调用百度的ip定位api服务 详见
		// http://api.map.baidu.com/lbsapi/cloud/ip-location-api.htm
		// 如果请求参数中未指定上网IP，则默认返回当前服务请求来源的IP所对应的大致位置信息
		JSONObject json = readJsonFromUrl(
				"http://api.map.baidu.com/location/ip?ak=F454f8a5efe5e577997931cc01de3974&ip=175.10.94.253");
		System.out.println(json.toString());
		System.out.println("------------");
		System.out.println(((JSONObject) json.get("content")).get("address"));
	}
}